Chuck device



G. W. EMRICK CHUCK DEVICE Sept. 16, 1930.

Fil 'ed Sept. 18. 1928 G INVENTOR 296 Wf n'oZr.

'ATTOR Y Patentecl Sept. 16, 1930 UE1TE STATES PATENT OFFICE GEORGE W. EMRICK, O33 IBRGQKLYN, NEVT YORK, ASSIGNOR, BY MESNE ASSIGNMENTS, T ETTCO TOOL CO. INC. CF -BROQKLYN NEV YORK, A COIRPORA'I'ION OF NEW YORK G'H'UCK DEVICE Application filed September 18, 1928. Seria1 N0. 306,752.

This invention re1ates t0 chuck devices of Various kinds and Glasses and particularly t0 what are known as 011111 chucks; anc1 the 0bject 0f the invention is 180 provide a device 011 this dass with improved ineans for mounting 0r coupling the chu0k boc1y in connection with the spind1e to provide relative movementbetween the spindle and chuck b0c1y, faci1itab ing the quick c1isengagement of a dri11 01 other t001 from the jaws 0f the chuck c1evice by releasing 13110 operating means through Whafi may be terrned a hminer 1010w; a further object being t0 provide 21 coupling between the spindle and ch1gck device involving a rotary clutch f01 transmitting the movement 01? the spind1e to the 11001 supporting javvs 0f the chuck Wherein free rotary movement is provided between the respective members 0f the c1utch, permitting one c1utch member 150 strike the other proc1ucing a, hammer blow in releasing the cool engagihg jaws; a still further object being t0 provide a chuck of the dass deseribec1 involving thr ee independent units which may be manufactured and s01d sepa'rately, collectively 01 in any two pairs 01 units, especilly in the replacement of worn 0r broken pzirts; anc1 with these and 0131101 objects in view, the invencion consists in a device 0f the dass anc1 for the purf 0se specified, which is simple in construction, ef-

fieient in use, and Which is const-ruci3ed as hereinafter described and c1aimec1.

The invention is fu11y c1isc1osec1 in the following specification, 0f Whi0h the aceompanyfing drawing forn1s a part, in which the sep alate par'ts 011" my improvement are desigimted by suitab1e referencecharacters in each of the views, anc1 in which:

Fig. 1 is a se'ctiona1 view 0f a chuck made accorc1ing to my invention with part 0f the construction broken away.

Fig. 2 is a section 011 the 1ine 22 01 Fig. l.

Fig. 3 is a section 011 the1ine 33 o'f Fig. 1 and,

Fig. 41 is z detail view of 0116 of the units which I employ, detached from the other units of the c1evice.

My improved chuck device is designed f01 use in connection with t001s, machines 01' (1e- Vices 013 any kind 01 dass anc1especially in connection With e1ectric c1ri1ling machines. In chuck devices as are in common use, it is often experienced that the dril1 or t001 supported therein, in most instances, becomes wedged and secure1y bound t0 the chuck by the jaws thereof, by virtue of the Stress 0r strain t0 which the (11'111 01 t001 is subjected, causing extreme difiiculty anc1 inconvenience in the removal 01 ehe dri11 0r 12001 from the chuck, anc1 this is especial1y true when the chuck c1evice is usec1 0n e1ectric dril1ing machines, wherein the spinc1le 0f the chuck is coup1ed wit-h and constitutes the armature shaft 0f the e1ectric motor.

It is one 0f the princip1e features of my invention to provide a chuck device wherein the quick anal easy 1e1ease of firm1y engaged t001s may be facilitated in a simple anc1 practical manner, anc1 this resu1t is accomplished by providing means f01 imparting a harnmer blow 130 the jaW operacing member or unit 0f the chuck 130 free said jaws from the too1.

In carrying my invention into effecc as sh0wn in the accompanying drawing, I emp1oy 1ZWO casing parts 5 and 6, which consti tute one unit part of the device, termec1 a casing unit. At 7, I have shown in Fig. 4 of the drawing, the jaw supporting and operating unit 1 the device und at 8, Fig. 1 01 the dravving, I have shown the spind1e unit of the device.

The casing 5 is tubu1ar in form and pro- Vic1ec1 at one enc1 thereof with an internal screw thread 9 in connection with which a screw threac1ec1 0011211 10 011 the unit 7 operates to feed saic1 unit upward1y and downwardly in the casing 5, and the other 01' 1ower end of the casing 5 is internal1y threaded as seen ab 11 to permit of the attachment of the casing paart 6 therewith, the latter being ex- 8 for di'iVi11g the dri1l in che opela'ion 01 drilling a workpiecethe Stress upon the unit 7 .is torotate the co1lar 10 in &c1ir ection to feed the jaws 15 downWardly'and inward1y, tending so more firmly engage "the "6001. Clutoh members 22 ahd1 a are in engage n1ent in this Operation.

VVhen it is desired t0 re1ease the t001 afuec being firmly gripped by the jaws 15, t11e casing 5 is given a sudden rotary inovement by a quick thrust er striking 0f the rib 35 011 the periphery thereof. In this 'movement, the members 10 carried by the 0011er 10 m0ve freely through the c1ea1ance spaces 27 anc1 suddenly engage die members 202 causing t-he release and u'pward feeding of the 0011211 10, thus disengaging the jaws 15 from t-he to01.

111 this connection, it Will be noted upon a consideration f Fig. "l of Ehe c1rawing that -Ehe membe1s 10 anc1 22 are arranged longitudinal1y 0f the respective parts 10 anc1 22, thus pennitting the movement 015 the 0011er 10 longitudinally of the spindle adapter 22,

but Iega1dless 0f the Position 0f the 0011211 10, When the de1dce is assembled the members 10 anal 22 are in en'gagement.

'It Will be unc1erstood that my improved 'chuck device may be manufzgctured and 501d es a complete unit, or this unit may conslst 01: a11 0f the parcs except the spindle 94 proper. On the othef hand, the device may consist of all of the parts except the unit 8 Whic h ixic1udes ehe spindle 24 zmd adapter 22. T0 facilitate the manufacture and sa1e of the several Parts er units and especially 111 the rep1a'cement of parts of old devices, the unit 7 may be manufactured and sold separately a1id the casing unit similarly manufactured. and s01c1." H0Wever, in the last instance, the separate parts 5 and 6 may ifdesired be sold separate1y. It Will also be understood that the spindle unit 8 may be manufactured and sold independently of the remainder 01: the device.

It Will be apparent that while I have shown anc1 described one use of my invention und 0ne assemblage of arts Cf more 0.1 less specific construction, that I, am not necessarily limid to the structural details of the parts herein shown anc1 described, and Various other changes in and modifications Of the const'ruction herein set forth may' beh1ade Within the Scope 0f the appended claims wioh- 0ut departing fron1 the spirit of my invention or sacrificing is advantages.

I1zwing fu11y described my invention, what I claim a.s newncl desire to secure by Letters Patent, is

- l. A chuck 01 the dass described comprising a casing, a jaw supporting and operating unit mounted in said casing and including jaws supported in the casing to move longitudinally und radially with respect t0 the axis thereof, said unit inc1uding an indeparts, and said c1utch faces permitting ehe free anc1 independent movement 01 seid part longitudinally and circumferentially with l'eference to said member.

2. A chuck of the dass described comating unit mounted in said cas1ng and including jaws supported in the casing t0 move 1ongitudinally and radially with respect to the axis thereofi seid nnit including an independently rotatable part in threaded engsigement with seid casing und provided with a clutch face and a spinc1le actuaced member m0unted in the casing and having a eluk:h face cooperating With the Clutch face of said art, seid clutch faces permitting thefree und independent movement of said part Ion" gitudinally and circumferentially with reference to seid member, and sairl casing includinga tubular portionfo rming an axis for seid nnit and a bearing for the inner end. 0f seid member.

3. A chuck of t-he dass described comprising a casing consisting of a tubu1ai* part having an internal screw thread atone end thereof, und a substantially conical ja.w guiding pa.rt secured t0 seid tubular art, a

jaw supporcing und opefating unit arrange'd 111 said casing parts and including a.screw threac1ed collar adapted to engage the screw th1eads of sa1d cas 1ng t0- feed said umt and the aws thereof longitudinally of the casing,

anc1 said unit including a aw supporting ring independently rotatable with respect 150 seid 0011er.

5. A chuck 0f the dass described com prising a casing consisting of a 1bular part having an internal screw thread at one end thereof and a substantially conical jaW guiding part secured to said tubular part, a jaw supporting and operating unit arranged in said casing parts anc1 includin9: a screw threaded collar adapted to engage thescrew threads of said casing to feed said i1nit and the jaws thereof longitudinally of the casing, saicl unit including a jaw spporting ring independently rotatable Wih respect 1 0 said collar, and bearing bal1s disposecl between adjacent ende of said ring and 0011211 and said bearing belle being movable radially with respect thereto.

ments adapted to cooperate with the c1utch elements of said member in the severa1 positions thereof, and the clutch elements of said collar being eircumferentially spaced with reference 110 the clutch elements of said member whereby said collar Will have free and limited rotary movement with respect 130 said member in the several positions thereof.

In testimony that I claim the foregoing as my inverition I have signed my name this 14th day 03E Sept, 1928.

GEORGE W. EMRICK. 

